(Nick Wagner/Austin American-Statesman via AP). FBI agents meet at the scene of an explosion in Austin, Texas, Sunday, March 18, 2018. At least a few people were injured in another explosion in Texas' capital late Sunday, after three package bombs deto...

Police have warned residents near the site of the latest explosion in Austin to remain indoors and to call 911 if they need to leave home before 10 a.m.More >>

Police have warned residents near the site of the latest explosion in Austin to remain indoors and to call 911 if they need to leave home before 10 a.m.More >>

(AP Photo/Jennifer Kay). Six crosses are placed at a makeshift memorial on the Florida International University campus in Miami on Saturday, March 17, 2018, near the scene of a pedestrian bridge collapse that killed at least six people on March 15.

A matter of seconds between those who would live and those who would die as Florida pedestrian bridge topples down highway bustling with passing vehicles.More >>

A matter of seconds between those who would live and those who would die as Florida pedestrian bridge topples down highway bustling with passing vehicles.More >>

(Joe Ahlquist/The Rochester Post-Bulletin via AP). Emergency personnel respond to the scene of a fatal stabbing Saturday, March 17, 2018, at the Salvation Army Castleview Residence in downtown Rochester, Minn. Police have arrested a man in the multiple...

Police have arrested a man in the fatal stabbing of two men at a Salvation Army apartment building in downtown Rochester, Minnesota.More >>

Police have arrested a man in the fatal stabbing of two men at a Salvation Army apartment building in downtown Rochester, Minnesota.More >>

(AP Photo/Elise Amendola, File). FILE - This Monday, June 19, 2017, file photo shows a user signing in to Facebook on an iPad, in North Andover, Mass. Facebook has a problem it just can’t kick: People keep exploiting it in ways that could sway election...

(Amy Beth Bennett/South Florida Sun-Sentinel via AP, Pool, File). FILE - In a Wednesday, March 14, 2018 file photo, Nikolas Cruz is lead out of the courtroom after an arraignment hearing at the Broward County Courthouse in Fort Lauderdale, Fla. Cruz is...

Documents show some officials were so concerned about the mental stability of Nikolas Cruz, the suspect in last month's school shooting rampage in Florida, that they had recommended he be forcibly committed.More >>

Documents show some officials were so concerned about the mental stability of Nikolas Cruz, the suspect in last month's school shooting rampage in Florida, that they had recommended he be forcibly committed.More >>

Authorities say a missing Pennsylvania teenager and a 45-year-old man who frequently signed her out of school without her parents' permission have been located in Mexico, and the man has been arrested.More >>

Authorities say a missing Pennsylvania teenager and a 45-year-old man who frequently signed her out of school without her parents' permission have been located in Mexico, and the man has been arrested.More >>

(Nick Wagner/Austin American-Statesman via AP). FBI agents work the scene of an explosion in Austin, Texas, Sunday, March 18, 2018. At least a few people were injured in another explosion in Texas' capital late Sunday, after three package bombs detonat...

At least two people injured in another explosion in Texas' capital after three package bombs that detonated earlier this month in other parts of the city killed two people and injuring two others.More >>

At least two people injured in another explosion in Texas' capital after three package bombs that detonated earlier this month in other parts of the city killed two people and injuring two others.More >>

Authorities said Friday that the cables suspending a pedestrian bridge were being tightened after a "stress test" when the 950-ton concrete span collapsed over traffic, killing at least six people and injuring 10

Authorities said Friday that the cables suspending a pedestrian bridge were being tightened after a "stress test" when the 950-ton concrete span collapsed over traffic, killing at least six people and injuring 10

WASHINGTON (AP) - One day after loudly and publicly vowing to defy a subpoena, a former Trump campaign aide spent Tuesday digging through his email and compiling documents requested by special counsel Robert Mueller.

Sam Nunberg said he'd been working since 6 a.m. to produce the thousands of emails and other communications with and about 10 ex-campaign officials.

"I thought it was a teachable moment," he said of his 24 hours in the limelight. He also said he planned to appear Friday before a grand jury, as Mueller had requested.

Nunberg had earlier balked at complying with the subpoena, spending Monday lashing out at President Donald Trump and his campaign and threatening to defy Mueller in a series of interviews.

"Why do I have to do it?" Nunberg told CNN of the subpoena. "I'm not cooperating," he said later as he challenged officials to charge him. But in an interview Monday night with The Associated Press, Nunberg reversed himself, and predicted that, in the end, he'd comply.

"I'm going to end up cooperating with them," he said.

Trump was not pleased to see his former aide, with whom he has had an up-and-down relationship, go on an interview binge, a person familiar with the president's views said Tuesday. The person was not authorized to discuss private conversations publicly.

In his interviews, Nunberg said Mueller may already have incriminating evidence on Trump directly, although he would not say what that evidence might be.

But Trump was also somewhat amused by the media spectacle Nunberg created, the person said.

A spokesman for the special counsel's office declined to comment.

In his interviews with the AP, Nunberg cast Mueller's subpoena demands as unreasonable. He said he'd traded numerous emails a day with Roger Stone, a Trump adviser, and former White House chief strategist Steve Bannon, and said he didn't have 80 hours to spend digging through his files.

"I am 36 years old. I'm trying to build a business. I have clients. I have deadlines I can't make because of this stuff. What am I supposed to do?" he said of his situation. He said his lawyer thought his performance "was somewhat entertaining" and told Nunberg he knew he was "going to comply the whole time."

He also insisted that he was sober during the interviews. CNN's Erin Burnett had told Nunberg on air that she smelled alcohol on his breath.

Stone told MSNBC that Nunberg "marches to his own drummer" and was not speaking at Stone's behest.

"I would urge Sam Nunberg to cooperate," he said.

Nunberg was the first witness in the ongoing federal Russia investigation to openly threaten to defy a subpoena. But he was not the first to challenge Mueller: Former Trump campaign chairman Paul Manafort filed a lawsuit in January challenging Mueller's authority to indict him.

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Associated Press writer Jonathan Lemire in New York contributed to this report.

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